The ConditionsThe Conditions

• A large free-product plume of JP-4 and 5 existed

under the active aircraft maintenance facility.

• The plume was nearly 250 feet long by 100 feet wide

with a maximum thickness of 5 to 6 feet. The with a maximum thickness of 5 to 6 feet. The

amount of fuel in the subsurface was estimated at

250,000 gallons.

• Aircraft maintenance activities could not be

disrupted.

• An emergency water force main was located under

the building.

The DesignThe Design

• Three 450-ft horizontal wells constructed of 8-inch

HDPE with 200-ft of slotted well screen.

• Three 2-inch collection pipes installed in each

horizontal well to remove product from different horizontal well to remove product from different

areas.

• Hydrophobic pumps transfer free-product to

treatment equipment for collection.

LocationLocation

Installation Challenges

• Achieving the designed entry angle.

• Unexpected conditions – cypress stumps.

• Missing the water line and moving from a walk-over

location method to a wire-line location method.location method to a wire-line location method.

LocationLocation

LocationLocation

LocationLocation

LocationLocation

The Results

• The system became operational in August 1997.

• The system recovered an average of approximately

280 gallons of free-product per day and over 52,000

gallons of free-product the first year.gallons of free-product the first year.

• Recovered fuel was transported to the Air Station’s

central heating plant where it was blended and used

to operate the plant’s steam boilers.

• The system was regarded as a success and received

recognition from the DOD as the free product

recovery system of the year.

Founded in 1992, Directional Technologies, Inc. has installed over 1,000 horizontal

Horizontal Remediation Wells for Horizontal Remediation Wells for

Improved Site Cleanup Training WorkshopImproved Site Cleanup Training Workshop

www.directionaltech.comwww.directionaltech.com

Andrew Collins andrew@directionaltech.com 203-294-9200

Founded in 1992, Directional Technologies, Inc. has installed over 1,000 horizontal

remediation wells throughout the world.

Corporate Headquarters in Wallingford, CT

Branches offices in Philadelphia, PA; Ashby, MA; Atlanta, GA; Destin, FL